Questions tagged [truffle]

Questions regarding the implementation and use of the Truffle development and testing environment.

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Contract deployed successfully on localhost and mainnet, but gives error on rinkeby and ropsten

I tried to deploy a contract to rinkeby then on ropsten, but getting an error: Network ropsten-fork Minting initial supply of 5000000000 ... Error: Error: Error: invalid address (arg="_to", coderType=...
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29 views

not able to assign address to a public property using web3

while everything is working fine when working on remix ide but on truffle its not updaing value of a property (player2) i am also returning that address value and its returning as it should be. but ...
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22 views

Error based on inheritance and dependency between contracts (Using EternalStorage contract)

I have been using EternalStorage contract with my contracts for the storage purpose. Now the structure is some like this: Eternal Storage <- Contract (A) <- Contract (B) <- Contract (C) Now ...
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1answer
190 views

web3 - web3.utils.toHex zeros length

I'm trying to send 12 integer as bytes to a contract function. If I use web3.utils.toHex(12) the variable will become 0xc The problem is that when contract function parses bytes, it reads uint256, ...
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1answer
571 views

Error: Truffle is currently using solc 0.5.8,

i run migrate in the terminalbut it shows Error: Truffle is currently using solc 0.5.8, but one or more of your contracts specify "pragma solidity ^0.4.27". Please update your truffle config or ...
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32 views

Error: IPFSInbox has not been deployed to detected network

It's my first time writing smart contract in solidity and using IPFS to develop my dapp. I don't know how to solve it and why it pops up this errorNo web3 instance injected, using Local web3. Error: ...
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13 views

Truffle migrations - get deployed contracts list

I have the following problem: migrations no. 7: (deploy proxies) await deployer.deploy(TestProxy); await ExportUtils.addDeployed(await TestProxy.deployed(), true, { privileges: [ { ...
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1answer
191 views

TypeError: Cannot read property 'nodes' of undefined

I'm new to ethereum, and I'm trying to test the depositToken function of etherdelta on linux, which version is 0.4.9, and the token I use is vixcore which version is 0.4.24, and I got this error when ...
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131 views

Cannot Find Module Error for Truffle-contract

Error:- Uncaught Error: Cannot find module './truffle-contract.min.js' at c (web3.min.js:1) at c (web3.min.js:1) at index.html:27 <!DOCTYPE html> <html lang="en"> <head&...
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19 views

Use web3 0.2.x within Truffle V5

It's a pain to have to refactor tests written for TruffleV4 in web3 0.2.x to web3 1.0.x. Is there any way to avoid this situation by using web3 0.2.x instead within Truffle V5?
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23 views

Can i use a the msg.sender which is a address to call a function of the contract?

I am trying to mint a ERC721 token using openzeppilin/contracts. It was working correctly, but later had to change the design. So now i am forced to use the msg.sender who is the minter to call the ...
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31 views

Zepellin Crowsale buyTokens error

I'm trying to use the buyTokens function of the Zepellin Crowsale interface, but this gives me an error, without any log to be able to debug contract TokenA is MintableToken, PausableToken, ...
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96 views

Windows: command “npm install drizzle” give me an ERR!

npm WARN deprecated fs-promise@2.0.3: Use mz or fs-extra^3.0 with Promise Support npm WARN deprecated tar.gz@1.0.7: ⚠️ WARNING ⚠️ `tar.gz module has been deprecated and your application is ...
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39 views

truffle - toUtf8 on Migrations not working

I'm deploying my contracts via migrations and would like to show some info on the console about them just by getting data from these contracts and displaying it. I'm sending a deployed contract to the ...
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1answer
54 views

Saving a function in a variable in Solidity

I am very new to solidity and stack exchange as well. I am trying to use the date time api from https://github.com/pipermerriam/ethereum-datetime/tree/master/contracts. What getYear(date) does is ...
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138 views

truffle deploy --network ropsten issues

I am having an issue deploying to ropsten. I am receiving an insufficient funds error but I believe my address to have ether on ropsten. This command: truffle migrations --network ropsten Also ...
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33 views

Ganache does not show the transferred amount.but it shows theme in account section

as shown in the picture the amount of value which is transferred to contract is shown in the transaction section of Ganache. I mean it shows the amount which is transacted to the address. in the my ...
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1answer
2k views

html:82 Uncaught ReferenceError: App is not defined at HTMLButtonElement.onclick (html:82)

It's showing me uncaught reference error in my index.html file <div id="candidate-box"></div> <button class="btn btn-primary" onclick="App.vote()">Vote</button> ...
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2answers
137 views

Deploy contract dynamically based on user request

Inspired by this blog: https://medium.com/coinmonks/escrow-service-as-a-smart-contract-the-business-logic-5b678ebe1955 I want to deploy contract once a buyer want to purchase a service. However, I ...
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19 views

Smart-contracts referencing each other [duplicate]

How would one retrieve these three addresses in the "Knot" smart-contract? I am very new to this, and would like to know whether this is even possible. The "Knot" contract should be able to reference ...
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61 views

uncaught error:invalid address

Uncaught (in promise) Error: invalid address at inputAddressFormatter (formatters.js:271) at inputTransactionFormatter (formatters.js:97) at method.js:89 at Array.map (<anonymous>...
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1answer
67 views

Issue with Serverless deploy of smart contract-Dependency mismatch -Package.json,Package-lock.json error

I'm trying to deploy my smart contract serverless(AWS lambda) and I'm using Truffle framework. The code is getting deployed in an earlier system(earlier it was deployed here). Now I have updated the ...
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1answer
441 views

Failed to install Truffle on MacOS Mojave

I am currently really struggling in getting Truffle up and running. I am running MacOS Mojave and have Node (v.10.16.0) and NPM (6.9.0) and have tried npm install -g truffle and have gotten: ...
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1answer
55 views
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46 views

Hosting pet-shop DApp on IPFS - JSON Files problem

I am trying to host DApp "pet-shop" which one of the truffle boxes on IPFS. rsyncing of src, build/contracts and ipfs add files went very well and there are plenty of peers as seeders on the network ...
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176 views

Truffle Contract deployment >> Error: Returned values aren't valid, did it run Out of Gas?

I have a rpc enabled running private ethereum blockchain node with mining enabled. I have connected to it using metamask and have performed some contract interactions (deployment, calling functions,...
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63 views

How to fix? Tx nonce go out of sync when using multiple unit tests on the same contract under Ganache+Truffle

Here is my example contract (ignore the fact this could be pure, this is a simplified example and my real example is not a pure function, it changes state, but I can reproduce the bug with this simple ...
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67 views

Running Migrate in Truffle does not work

I have been using Remix for developing my dapp but decided I should use Truffle to make things a little more robust and professional. I have truffle and ganache installed. I run truffle migrate and ...
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35 views

I keep getting this Error when i tried to use contracts instance to call a contract's function?

I tried creating instance by: const certificate = Certificate.deployed(); OR const certificate = Certificate.at(config.contract_id); ANd i get this Error below: TypeError: Cannot read property '...
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2answers
30 views

Truffle error missmatch artifact

What does this means?network/artifact mismatch Contract has not been deployed to detected network but when i write truffle network i can see mine.
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25 views

How do I fix Truffle deployment not working on struct array: “components found but type is not tuple; report on GitHub.”?

I wrote the following, which compiles in truffle just fine, but will not deploy. I get the error "components found but type is not tuple; report on GitHub." Am I doing something wrong appending to a ...
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101 views

Unhandled Rejection (TypeError): Election.methods.addCandidate is not a function

//solidity code function addCandidate(string memory _name) public { candidatesCount++; candidates[candidatesCount] = Candidate(candidatesCount, _name, 0); } //App....
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39 views

Truffle migration contract [duplicate]

Why do we have to deploy the migration solidity contract in truffle? Do we also have to deploy it during production? Why do we have to deploy it so many times and why can't we use a single large ...
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84 views

Drizzle Installation: pauses at fetchMetadata: sill resolveWithNewModule http-https@1.0

I am following this tutorial https://www.trufflesuite.com/tutorials/getting-started-with-drizzle-and-react. Everything is working smoothly until I have to npm install drizzle. I then run into the ...
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137 views

Expressjs backend (truffle box) with metamask

I use truffle to unbox the express-js box (https://truffleframework.com/boxes/express-box). The code loads the web3 instance in server side which connects directly to ganache. Now I want to be able to ...
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2answers
794 views

Uncaught TypeError: e is not a function from getAccounts() + web3 1.0.0-beta.37 + truffle + React Dapp

I am creating my first Dapp by using web3 1.0.0-beta.37 and trufflfe While getting the accounts in app.js by using ganache-CLI and Metamask, I am getting following error. Uncaught TypeError: e is ...
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382 views

Can't resolve 'react' after installing additional dependencies to truffle react box

I am using a truffle box react - after truffle unbox react everything works fine Later however, after yarn add @material-ui/core I get an error: Can't resolve 'react' The same happens after ...
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1answer
58 views

truffle won't run tests while initializing a global contract instance

I am testing my smart contract in truffle. I need to declare some global variables hence I did so outside 'it'. I also tried declaring a global contract instance that I can use in all test cases. ...
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1answer
192 views

Unknown network “ganache”. See your Truffle configuration file for available networks

I am working windows 10 and have both truffle.js & truffle-config.js I am using command truffle migrate --reset --networks rinkeby Error produced: Unknown network "ganache". See ...
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86 views

How to use the address.transfer(amount)?

Using this smart contract, I want to transfer from one account to another. Here is my simple smart contract : pragma solidity ^0.5.0; contract Subtract { address payable public minter; uint ...
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261 views

Hoiw to convert string to address with web3

I am getting address value with html input as string value how do we convert the string to address for parsing with truffle-contract. Here's the method I am using: registerAirline : async() => {...
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1answer
302 views

Why Could not find artifacts for contract from any sources

I am using windows 10 with truffle and ganache-cli. I have 2 contracts file to be deployed contain interfaces of other contracts defined within the contract: Contracts: ERC721Mintable.sol Ownable ...
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385 views

Web3 Cannot read property 'apply' of undefined

I'm new to dapp and trying to follow iwaldman to build an ipfs-image-dapp. Here is the repo: https://github.com/iwaldman/ipfs-image-dapp. But running yarn start gives the error Cannot read property '...
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1answer
151 views

truffle testing enum

I am trying to test an enum value from a test. This is simplified version of the contract: pragma solidity >=0.5.0 <0.7.0; contract Foo { enum State { StateA, StateB } State ...
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1answer
73 views

Quorum 7nodes example unable to finish simplestorage migration using privateFor

I'm following this example: truffle quorum example I created a cluster using docker-compose and all the nodes are up and running but when I run the truffle migrate command the migration doesn't end ...
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2answers
57 views

Load accounts to truffle

I'm using truffle v5.0.14 to handle my contracts. All was well while developing with ganache, but when I wanted to deploy to the real network (a private one) I have problems with the account. The ...
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2answers
155 views

How to deploy truffle project on web server?

I've developed a DApp using truffle suite and now I want to deploy this dapp online so that everyone will be able to access it over the internet. I've used Rinkeby-Testnet for smart contract ...
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1answer
99 views

passing variables between different contract by solidity (0.5.0+ version)

I writed ERC20 contract and ICO contract for a test , but I meet a lot problem with compile problem. My ERC20 contract have own constructor but,I also need a ICO contract(a control)for passing ...
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23 views

Deploying multiple instances of contract, no error but no deployment

I am trying to deploy the same contract code to create multiple instance: const contract = require('truffle-contract') var Greeter3 = artifacts.require("Greeter3"); module.exports = function(...
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1answer
78 views

How to use cacheSend of drizzle library when the method needs two parameters

Should it be like the example below(2,2 as two different parametres) Ex: const stackId = drizzle.contracts.SimpleStorage.methods.set.cacheSend(2,2, {from: '0x3f...'})

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